SkClipStack: add bounds() and isEmpty() methods

Also: update some of SkPDF to use these rather than the RasterClip.

Change-Id: I5a2564d2269c145135df6a8eda65ab05e4aeaf14
Reviewed-on: https://skia-review.googlesource.com/8159
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/src/core/SkClipStack.cpp b/src/core/SkClipStack.cpp
index bc8c5c5d62..f41945e090 100644
--- a/src/core/SkClipStack.cpp
+++ b/src/core/SkClipStack.cpp
@@ -580,6 +580,20 @@ void SkClipStack::restoreTo(int saveCount) {
     }
 }
 
+SkRect SkClipStack::bounds(const SkIRect& deviceBounds) const {
+    // TODO: optimize this.
+    SkRect r;
+    SkClipStack::BoundsType bounds;
+    this->getBounds(&r, &bounds);
+    if (bounds == SkClipStack::kInsideOut_BoundsType) {
+        return SkRect::Make(deviceBounds);
+    }
+    return r.intersect(SkRect::Make(deviceBounds)) ? r : SkRect::MakeEmpty();
+}
+
+// TODO: optimize this.
+bool SkClipStack::isEmpty(const SkIRect& r) const { return this->bounds(r).isEmpty(); }
+
 void SkClipStack::getBounds(SkRect* canvFiniteBound,
                             BoundsType* boundType,
                             bool* isIntersectionOfRects) const {